Well I am no expert and I am sure you will get lots of advice but here is my opinion.
I am also a mother and I work full time in a medical building during the day. Due to my husbands health conditions he is no longer able to work so there goes our Christmas bonus we depended on every year.
I figured I would do "shopping" after my day job, bang out a few jobs and make some extra money for the holidays.
Its just not that simple. It is time consuming and MOST of the pay is rather small so you need to do a bunch of jobs to make even a small profit.
I find myself leaving my day job at 3:30 pm and showing up at home after 7 or 8 at night.
I am sure there are some who will disagree with me, so this is just my opinion.